I purchased the loom for the Trio Pro Pilot, realising the actual auto pilot is approx 6.25" long, add the wiring plug it is longer and this would hit the panel behind my front panel, so I cut a circular hole, ran some plastic edging, so the plug can fit through the hole and screw into the back of the pro pilot. Then the task of running the loom cables along with the other (seems like a lot of cables) wires back through cable holes. One wire goes to the rear elevator control where the servo mounts (pitch) and the other runs into the right wing (roll).